<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
		<title>核心属性</title>
	</head>
	<body>
		html核心架构不具有核心属性比如html,head,title,base,meta,param,script,style
		<br>
		<p>class 定义了元素的样式规则</p>
		<p>ID定义了元素的唯一规则</p>
		<p style="color: red;">style定义了元素的样式</p>
	</body>
</html>
<!--1.核心属性
class
id 
style-->